SAN DIEGO (CNS) - A man accused of stabbing his two half-brothers during an argument at a Bay Terraces home is mentally incompetent to stand trial and will be sent to a state mental hospital, a judge ruled Friday.

John Christopher Sudds, 21, is charged with attempted murder, assault with a deadly weapon and making a criminal threat.

After reviewing reports from doctors, Judge Frederick Maguire found that Sudds could not understand the charges against him and could not assist in his defense. The judge ordered that Sudds be sent to Patton State Hospital for up to three years or until he regains his sanity.

Sudds is accused of stabbing 17-year-old Theola Tucker and 24-year-old Leonard Ingram - the three have the same mother and different fathers - about 2:20 a.m. last Sept. 21 outside a home on Skyline Drive.

Tucker, now 18, testified during a preliminary hearing in January that Sudds came to the home about an hour before the stabbings and wanted to come in. The witness said he told Sudds he wasn't welcome and the defendant left.

Tucker said he was awakened later by yelling at the front door and encountered Sudds, who was standing outside the door talking with Ingram.

Tucker said he hit Sudds, who hit him back.

The witness said he felt shortness of breath in his lungs and lay down on the ground, realizing he had been stabbed in the face, chest, back and thigh.

Ingram testified that he was stabbed twice in the stomach as he tried to get Sudds to leave.

Sudds' grandmother testified that he waved a knife at her in the home a week before the stabbings.